Company lists · Data refreshed November 2026

Top 25 Transformer oil analysis services worldwide

RevenueBase identified 594 company matches for transformer oil analysis services worldwide as of November 2026 and tracks 6,446 professional contacts across them, including 1,123 with verified work emails. The United States is the largest market and Vadodara the largest hub.

This list covers company matches for transformer oil analysis services worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026. Country and city lists for transformer oil analysis services follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
594Companies
6,446Contacts tracked
1,123Verified emails
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The 25 largest transformer oil analysis services worldwide

Ranked by team size
Top 25 of 594 company matches for transformer oil analysis services worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchVadodara, IndiaHQ recorded Nov 6, 2026501-1,000508 contacts →

Exact match

“Voltamp Transformers Limited is a Oil filled Power, Distribution and Dry type Transformer manufacturing company based in Vadodara, Gujarat State in India since year 1967.The…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchTizayuca, MexicoHQ recorded Nov 6, 20261,001-5,000301 contacts →

Exact match

“En VOLTRAN, nuestros equipos de Ingenieros y Técnicos, trabajan bajo los estándares más estrictos de calidad para diseñar, fabricar, reparar y poner en operación transformadores…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchContagem, GA, BrazilHQ recorded Nov 6, 202651-200258 contacts →

Exact match

“As a leader in comprehensive oil, fuel, coolant, metalworking and consulting services, ALS is committed to providing unmatched services with cost-effective quality results.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchTallmadge, OH, United StatesHQ recorded Nov 6, 2026201-500219 contacts →

Exact match

“SDMyers is the industry leader in transformer and substation maintenance and electric power system reliability.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchMontgomery, AL, United StatesHQ recorded Nov 6, 2026201-500212 contacts →

Exact match

“HD Hyundai Power Transformers USA, Inc, a subsidiary of HD Hyundai Electric Systems, stands as a premier transformer manufacturer located in Montgomery, Alabama.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchBogota, ColombiaHQ recorded Nov 6, 2026201-500161 contacts →

Exact match

“FYR INGENIEROS es una empresa dedicada a la Fabricación de Transformadores Tipo Secos clase H, contamos con Laboratorios de Análisis de Aceites Dieléctricos, y de Ensayos…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchMckinney, AZ, United StatesHQ recorded Nov 6, 2026201-500142 contacts →

Exact match

“Emerald Transformer is the premier national single-source solution for oil-filled electrical equipment with services including repair, re-manufacturing, field technical services…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchMeyerton, South AfricaHQ recorded Nov 6, 2026201-500107 contacts →

Exact match

“Revive Electrical Transformers (Pty) Ltd was established in 1997 and has grown to be one of the largest transformer distribution manufacturers in Africa.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchSantiago, ChileHQ recorded Nov 6, 202651-20090 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchIndonesiaHQ recorded Nov 6, 202651-20082 contacts →

Exact match

“Services Laboratory for - Oil Analysis - Mineral and Natural (Bio) Fuel - Grease - Industrial Hygiene Parameters - Environmental Parameters - Bio Monitoring - Transformer Oil…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchLasalle, QC, CanadaHQ recorded Nov 6, 202651-20074 contacts →

Exact match

“Morgan Schaffer est un leader dans l’analyse de l’huile diélectrique et en instrumentation d’analyse de gaz dissouts (AGD), et ce depuis plus de 50 ans.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchVénissieux, FranceHQ recorded Nov 6, 202651-20073 contacts →

Exact match

“Transformateurs Solutions Vénissieux is the French specialised company of electric power transformers reparation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchHouston, TX, United StatesHQ recorded Nov 6, 202651-20070 contacts →

Exact match

“Texas OilTech Laboratories, is committed to remaining a world-class petroleum testing laboratory for the analysis of fuels, lubricants, petrochemical, and environmental materials.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchSharjah, United Arab EmiratesHQ recorded Nov 6, 202651-20062 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchNew Glasgow, NS, CanadaHQ recorded Nov 6, 202651-20055 contacts →

Exact match

“STARK International is an industry leader in providing oil services for transformers, hydraulic and lubrication oils.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchSherbrooke, ON, CanadaHQ recorded Nov 6, 202651-20055 contacts →

Exact match

“Surplec offers a centralized service for the sale, purchase, repair, rental, and testing of medium- and high-voltage transformers and equipment.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchAgrate Brianza, ItalyHQ recorded Nov 6, 202651-20052 contacts →

Exact match

“Specialtrasfo engineers and manufactures custom designed oil immersed special transformers for industrial and power applications.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchSacramento, United StatesHQ recorded Nov 6, 202651-20052 contacts →

Exact match

“TJ|H2b Analytical Services is a full service laboratory that offers analytical testing and diagnostic evaluation of oil and gas insulated electrical equipment at our global lab…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchCollegno, ItalyHQ recorded Nov 6, 202651-20047 contacts →

Exact match

“Sea Marconi is a global leader in transformer lifecycle management with insulating fluids, delivering sustainable and innovative solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchBogotá Dc, ColombiaHQ recorded Nov 6, 202611-5043 contacts →

Exact match

“En LG SERVIS S.A.S.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchMonte Mor, BrazilHQ recorded Nov 6, 202651-20043 contacts →

Exact match

“Fundada em 01/07/1997, a Brastrafo do Brasil é uma empresa nacional que nasceu com o propósito de atender o setor elétrico, em todos os seus segmentos (geração, transmissão…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchHouston, TX, United StatesHQ recorded Nov 6, 202611-5037 contacts →

Exact match

“Oilfield Labs of America is an analytical laboratory network with a business goal and mission of providing the highest quality analytical testing in the fastest time possible to…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchCary, ON, United StatesHQ recorded Nov 6, 202651-20036 contacts →

Exact match

“About WearCheck Mission Statement: Established in 1966, WearCheck is a global leader in oil and fluid analysis, reliability services, and training, providing solutions to improve…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchKinder, LA, United StatesHQ recorded Nov 6, 202611-5036 contacts →

Exact match

“Oil Clinic Inc is a health, wellness and fitness company based out of 1125 3rd Ave, Kinder, Louisiana, United States.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchBuenos Aires, ArgentinaHQ recorded Nov 6, 202611-5035 contacts →

Exact match

“Laboratorio independiente especializado en lubricantes, combustibles y petróleo.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 594 transformer oil analysis services worldwide

See the full list, filter by size, metro and specialty, and access 1,123 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Transformer oil analysis services worldwide at a glance

As of Nov 6, 2026
17.4%Verified-email coverage
10.9Average contacts per company
11-50Median size (employees)
1.5%Largest-city concentration · Vadodara
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
230
11-50
246
51-200
87
201-500
16
501-1,000
3
1,001-5,000
1
5,001-10,000
1

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage
Every country. Country and city lists for transformer oil analysis services are linked below.
What qualifies
Company records worldwide whose business descriptions match “transformer oil analysis services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 1,123 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Transformer oil analysis services by location

2 lists · largest first

Every Transformer oil analysis services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “transformer oil analysis services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many transformer oil analysis services are there worldwide?

RevenueBase identified 594 company matches for transformer oil analysis services worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Voltamp Transformers Limited tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most transformer oil analysis services?

The United States leads with 64 companies, followed by Brazil (60). Every transformer oil analysis services list by country and city is linked on this page.

Which city has the most transformer oil analysis services?

Vadodara leads with 9 company records, followed by Bangalore (8) and Sao Paulo (7).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,123 professional contacts with verified work emails tracked across these 594 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.